Firearm.



P. MAUS ER. DECD. r. EICHHORN. ADMINISTRATOR.

FIREARM.

- APPLICAIION FILED AUG.20. 1915.

1 2119749 I Patented Mar. 6, 1917.

UNITED STATES PATENT OFFICE.

PAUL MAUSER, DECEASED, LATE OF OBERNDORF-ON-THE-NECKAR, GERMANY, BY

FRIEDRICH EICHHORN, ADMINISTRATOR, OF OBERNDORF-ON-THE-NECKAR, GER-MANY, ASSIGNOR TO WAFFENFABRIK MAUSER AKTIENGESELLSCHAFT, OF OBERN-DORF-ON-THE-NECKAR, GERMANY, A CORPORATION OF GERMANY.

FIREARM.

Specification of Letters Patent.

Patented Mar. 6, 1917.

Application filed August 20, 1915. Serial No. 46,582.

. following is a full, clear, and exact specification.

The present invention relates to a breech arrangement for fire-arms withreturn spring. In such breech arrangements the return spring isgenerally disposed in such a. mannerwithin the breech casing, that itforms an obstruction in dismantling the breech. According to the presentinvention this disadvantage is obviated by the spring being disposed insuch a manner in the lid of the casing, that it is removed together withthe said lid when the latter is taken off.

In the drawing an embodiment of-the present invention has beenexemplified. Figure 1 is a vertical longitudinal section through abreech embodying the invention, and showing the respective parts. Fig. 2is a plan of the lid, removed, seen from below. Figs. 3 and 4 are rearviews of the casing with the bolt 0 in two different positions,respectively.

The return spring S is disposed in a sleeve-like enlargement in of thebreech piece k, into which on the breech being opened, a sleeve gprovided in the lid 1) of the breech casing h will. enter, the saidsleeve g surrounding the spring. In this sleeve 9 a rod 6 is disposedwithin the spring, which rod moves in a sleeve T, which bears with itsforward, flanged end against the bottom of the enlargement 70 of thebreech piece.

The lid 7) is held to the casing h by means of a swiveling bolt 0, whichpivots on a pin 6 in the lid, and which has a nose 0 which engages in agroove k in the casing. This swiveling bolt is, furthermore, providedwith a groove 0 curved to a circular line, which is bordered on bothsides by webs. At the one end of the groove, at 0 these webs have beencut away, so that the rod 0' may be, at this point, introduced with itsrear head into the groo"e. Behind the head the rod (1 is reduced at e,in which reduction the webs of the groove 0 engage, so

that the rod is thereby held tothe lid Z).

The nose 0 and the groove 0 c of the swiveling bolt are so arranged,that the rod 0 is held by the webs of the groove 0 when the nose 0 isoutside of the recess 72. of the casing, that is when the lid of theeasing is disengaged. In consequence thereof, when the lid is removedfrom the casing by the lid catch 0 being disengaged,the rod 0 issimultaneously coupled to the lid, so

that when the lid is removed from the casing, also the rod e is removedwith it. With the sleeves r and g coupled to the rod 6 and the sprin 8disposed between the said sleeves the sleeves and rod and spring areremoved from the casing. The breech bolt is, then, free and is no moreunder the action of the spring, so that the further dismantling of thebreech is not obstructed.

I claim: a

1. A fire arm comprising a frame, a barrel, :1 breech piece, a closingspring therefor, said frame having a chamber in which said breech pieceslides, and an immobile lid over said chamber and separable from thebarrel, frame, and breech piece, said lid having means for fixing saidclosing spring thereto, whereby it may be removed with said lid.

2.'A fire arm comprising a frame, re], a breech piece, a closing springtherefor. said frame having a chamber in which said breech piece slides,an immobile lid over said chamber and separable from the barrel, frame,and breech piece, a telescoping rod in said spring, said rod havingmeans for limiting the extension of said spring and means on the coverfor fixing said rod thereto.

3. A firearm cdmprising a frame, a barrel, a. breech piece. a closingspring therefor, said frame having a chamber in which said breech pieceslides, and an immobile lid over said chamber and separable from thebarrel, frame, and breech piece, saidlid having a bolt adapted to fixsaid closing spring thereto and for fixing said lid to the frame.

a barsaid chamber, a telescoping rod in said spring, said rod havingmeans for limiting the extension of said spring, and a bolt 0 pivotallymounted on said lid, and having means for engaging said rod, and meansfor locking said lid to the frame.

5. A fire arm comprising a frame, a barrel, a breech piece, a closingspringtherefor, said frame having a chamber in which said breech pieceslides, an immobile lid over said chamber, a telescoping -rod in saidspring, said rod having means for limiting the extension of said spring,and a bolt 0 pivotall; mounted on said lid, and having 15 lllilIlS forengaging said rod and means for Mauser,

